<template>
  <view class="goods-container">
    <!-- 轮播图信息 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" circular :duration="1000">
      <swiper-item v-for="(item, index) in goods_info.pics" :key="index"><image :src="item.pics_big" @click="preview(index)"></image></swiper-item>
    </swiper>

    <!-- 商品信息区 -->
    <view class="goods-info-box" v-if="goods_info">
      <!-- 商品价格 -->
      <view class="price">￥{{ goods_info.goods_price }}</view>
      <!-- 商品信息 -->
      <view class="goods-info-body">
        <view class="goods-name">{{ goods_info.goods_name }}</view>
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费信息 -->
      <view class="yf">快递：免运费</view>
    </view>

    <!-- 商品图文信息 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>

    <!-- 商品导航 -->
    <view class="goods-nav"><uni-goods-nav :fill="true" :options="options" :button-group="buttonGroup" @click="onClick" @buttonClick="buttonClick" /></view>
  </view>
</template>

<script>
import { mapMutations, mapGetters } from 'vuex';
export default {
  data() {
    return {
      goods_id: null, // 商品id
      goods_info: null, // 存储当前商品信息
      options: [
        {
          icon: 'shop',
          text: '店铺',
          infoBackgroundColor: '#007aff',
          infoColor: '#f5f5f5'
        },
        {
          icon: 'cart',
          text: '购物车',
          info: 0
        }
      ],
      buttonGroup: [
        {
          text: '加入购物车',
          backgroundColor: 'linear-gradient(90deg, #FFCD1E, #FF8A18)',
          color: '#fff'
        },
        {
          text: '立即购买',
          backgroundColor: 'linear-gradient(90deg, #FE6035, #EF1224)',
          color: '#fff'
        }
      ]
    };
  },
  onLoad(options) {
    this.goods_id = options.goods_id;
    this._getGoodsDetail();
  },
  methods: {
    async _getGoodsDetail() {
      const { data: res } = await uni.$http.get('/api/public/v1/goods/detail', { goods_id: this.goods_id });
      if (res.meta.status !== 200) return uni.$showMsg();
      res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;"');
      this.goods_info = res.message;
    },
    preview(index) {
      // previewImage  图片预览
      uni.previewImage({
        current: index, // 指定大图预览的开始图片的索引
        urls: this.goods_info.pics.map(x => x.pics_big)
      });
    },
    onClick(e) {
      if (e.content.text === '购物车') {
        uni.switchTab({
          url: '/pages/cart/cart'
        });
      }
    },
    ...mapMutations('cart', ['addToCart']),
    buttonClick(e) {
      if (e.content.text === '加入购物车') {
        const goods = {
          goods_id: this.goods_info.goods_id,
          goods_name: this.goods_info.goods_name,
          goods_price: this.goods_info.goods_price,
          goods_count: 1,
          goods_small_logo: this.goods_info.goods_small_logo,
          goods_state: this.goods_info.goods_state
        };
        this.addToCart(goods);
        uni.showToast({
          title: '加入购物车成功！'
        });
        console.log(this.$store.state.cart.cart);
      }
    }
  },
  computed: {
    ...mapGetters('cart', ['total'])
  },
  watch: {
    total: {
      immediate: true,
      handler(value) {
        const findResult = this.options.find(item => item.text === '购物车');
        if (findResult) {
          findResult.info = value;
        }
      }
    }
  }
};
</script>

<style lang="scss">
swiper {
  height: 750rpx;

  image {
    width: 100%;
    height: 100%;
  }
}

.goods-info-box {
  padding: 10px;
  padding-right: 0;
  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }
  .goods-info-body {
    display: flex;
    justify-content: space-between;
    .goods-name {
      font-size: 13px;
      margin-right: 10px;
    }
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  .yf {
    font-size: 12px;
    color: gray;
    margin: 10px 0;
  }
}
.goods-container {
  padding-bottom: 50px;
}
.goods-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
</style>
